TC3918
REV1_20070503
Packaged Single-Bias Low Noise PHEMT GaAs FETs
FEATURES
!
0.7 dB Typical Noise Figure at 12 GHz
!
High Associated Gain: Ga = 13 dB Typical at 12 GHz
!
18dBm Typical Power at 12 GHz
!
13 dB Typical Linear Power Gain at 12 GHz
!
Lg = 0.25
µm,
Wg = 160
µm
!
100 % DC Tested
!
Micro-X Metal Ceramic Package
PHOTO ENLARGEMENT
DESCRIPTION
The TC3918 is a single-bias low noise ceramic micro-x packaged device with TC1101 PHEMT GaAs FETs,
which is designed to provide the single power supply application. The device is suitable for oscillator, low noise
amplifier in a wide range of commercial applications. All devices are 100% DC tested to assure consistent quality.
ELECTRICAL SPECIFICATIONS (T
A
=25
°
C)
Symbol
NF
G
a
P
1dB
G
L
I
DS
R
th
Noise Figure at V
DS
= 2 V,
f
Associated Gain at V
DS
= 2 V,
f
Linear Power Gain,
Thermal Resistance
f
Conditions
= 12GHz
= 12GHz
= 12GHz V
DS
= 4 V
11
16.5
11
13
25
230
dB
mA
°C/W
MIN
TYP
0.7
13
MAX
1.2
UNIT
dB
dB
Output Power at 1dB Gain Compression Point,
f
= 12GHz V
DS
= 4 V
Drain-Source Current at V
DS
= 4 V
ABSOLUTE MAXIMUM RATINGS (T
A
=25
°
C) TYPICAL NOISE PARAMETERS (T
A
=25
°
C)
V
DS
= 4 V
Symbol
V
DS
P
in
P
T
T
CH
T
STG
Parameter
Drain-Source Voltage
RF Input Power, CW
Continuous Dissipation
Channel Temperature
Storage Temperature
Rating
7.0 V
18 dBm
150 mW
175
°C
-65°C to +175°C
Frequency
(GHz)
2
4
6
8
10
12
14
16
18
NF
opt
(dB)
0.46
0.49
0.52
0.56
0.64
0.73
0.85
1.08
1.33
G
A
(dB)
17.7
16.1
14.6
13.2
12.0
11.0
10.6
10.5
10.2
Γ
opt
MAG
0.80
0.69
0.56
0.42
0.31
0.23
0.21
0.26
0.41
ANG
20
42
69
103
146
-161
-97
-19
72
Rn/50
0.67
0.58
0.45
0.32
0.19
0.14
0.13
0.18
0.38
HANDLING PRECAUTIONS:
The user must operate in a clean, dry environment.
Electrostatic Discharge (ESD) precautions should be
observed at all stages of storage, handling, assembly,
and testing. The static discharge must be less than
300V.
TRANSCOM, INC.,
90 Dasoong 7
th
Road, Tainan Science-Based Industrial Park, Hsin-She Shiang, Tainan County, Taiwan, R.O.C.
Web-Site:
www.transcominc.com.tw
Phone: 886-6-5050086
Fax: 886-6-5051602
P1/3
TRANSCOM [ TRANSCOM, INC. ]
